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Coastal Bottom Boundary Layers and Sediment Transport : Advanced Series on Ocean Engineering (Paperback) - Peter Nielsen

Coastal Bottom Boundary Layers and Sediment Transport

Advanced Series on Ocean Engineering (Paperback)

Paperback Published: 1st July 1992
ISBN: 9789810204730
Number Of Pages: 324

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This book is intended as a useful handbook for professionals and researchers in the areas of Physical Oceanography, Marine Geology, Coastal Geomorphology and Coastal Engineering and as a text for graduate students in these fields. With its emphasis on boundary layer flow and basic sediment transport modelling, it is meant to help fill the gap between general hydrodynamic texts and descriptive texts on marine and coastal sedimentary processes. The book commences with a review of coastal bottom boundary layer flows including the boundary layer interaction between waves and steady currents. The concept of eddy viscosity for these flows is discussed in depth because of its relation to sediment diffusivity. The quasi-steady processes of sediment transport over flat beds are discussed. Small scale coastal bedforms and the corresponding hydraulic roughness are described. The motion of suspended sand particles is studied in detail with emphasis on the possible suspension maintaining mechanisms in coastal flows. Sediment pickup functions are provided for unsteady flows. A new combined convection-diffusion model is provided for suspended sediment distributions. Different methods of sediment transport model building are presented together with some classical models.

"The book has a good balance between mathematics and discussions of the physics involved. The author has certainly produced a well-written, carefully organized and informative book representing an important link between boundary layer flow models and the resulting sediment transport. It is on this basis that I recommend the book, which should be very useful for both scientists and engineers working in the area of coastal process modelling. The book should also be well suited for use in graduate student courses." D Myrhaug Coastal Engineering, 1993 "... a well-written book. Mathematics is kept to a minimum and there are a number of helpful worked examples ... Nielsen's book describes what may well be the majority view in ten years time." J F A Sleath J. Fluid Mech., 1995

Notation
Bottom Boundary Layer Flow
The Boundary Layer and the Flow Above Itp. 1
The Nature of Oscillatory Boundary Layersp. 13
Oscillatory Boundary Layer Modelsp. 40
Wave-Generated Currentsp. 52
Wave-Current Boundary Layer Interactionp. 62
Sediment Mobility, Bed-Load and Sheet-Flow
Forces on Sediment Particlesp. 95
Incipient Sediment Motionp. 102
Bed-Load Transport in Steady Flowp. 109
Bed-Load and Sheet-Flow Under Wavesp. 116
Bedforms and Hydraulic Roughness
Introductionp. 129
Coastal Bedform Regimesp. 129
Bedform Dynamicsp. 131
Vortex Ripplesp. 135
Bedforms in Combined Wave-Current Flowsp. 143
Hydraulic Roughness of Natural Sand Bedsp. 145
The Motion of Suspended Particles
Introductionp. 161
Settling Velocityp. 164
Equation of Motion for Suspended Particlesp. 167
Accelerating Sediment in a Resting Fluidp. 170
Sediment Particles in Accelerated Flowp. 171
Sediment Trapping by Vorticesp. 181
Particles Settling Through Turbulencep. 189
Sediment Suspensions
Introductionp. 201
The Nature of Sediment Suspensionsp. 206
Pickup Functionsp. 222
Suspended Sedment Distribution Modelsp. 233
Sediment Transport Models
Introductionp. 263
Transport Models: In Essence Two Varietiesp. 263
Shore Normal Transport Over Vortex Ripplesp. 266
Shore Normal Sediment Transport Over Flat Bedsp. 276
Shore Parallel Sediment Transportp. 280
Loose Ends and Future Diections
Introductionp. 293
New models of wave-current boundary layer interactionp. 293
Hydraulic roughness of flat sand beds under wavesp. 296
Instantaneous, effective shear stresses on sand beds under wavesp. 297
Bottom boundary condition for suspended sediment distributionsp. 297
Distribution models for suspended sedimentp. 298
Referencesp. 299
Author Indexp. 309
Subject Indexp. 313
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9789810204730
ISBN-10: 9810204736
Series: Advanced Series on Ocean Engineering (Paperback)
Audience: General
Format: Paperback
Language: English
Number Of Pages: 324
Published: 1st July 1992
Publisher: World Scientific Publishing Co Pte Ltd
Country of Publication: SG
Dimensions (cm): 22.1 x 14.99  x 2.03
Weight (kg): 0.5
Edition Type: New edition